<template>
  <div class="col-md-4">
    <form class="form-horizontal" @submit.prevent="handleSubmit">
      <div class="form-group">
        <label>用户名</label>
        <input
          type="text"
          class="form-control"
          placeholder="用户名"
          v-model="commentFormData.username"
        />
      </div>
      <div class="form-group">
        <label>评论内容</label>
        <textarea
          class="form-control"
          rows="6"
          placeholder="评论内容"
          v-model="commentFormData.content"
        ></textarea>
      </div>
      <div class="form-group">
        <div class="col-sm-offset-2 col-sm-10">
          <button type="submit" class="btn btn-default pull-right">提交</button>
        </div>
      </div>
    </form>
  </div>
</template>

<script>
export default {
  name: "AddComment",
  data() {
    return {
      commentFormData: {
        username: "",
        content: "",
      },
    };
  },
  methods: {
    handleSubmit() {
      const { username, content } = this.commentFormData;
      if (!username || !content) {
        alert("输入内容不能为空");
        return;
      }
      this.$bus.$emit("addComment", username, content);
      this.commentFormData.username = "";
      this.commentFormData.content = "";
    },
  },
};
</script>

<style></style>
